Describe briefly the hormonal control of location« Back to Questions List

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Posted by Tarik Paik
Asked on December 7, 2018 10:20 am
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The hormones produced from the 4th month of pregnancy( 2nd and 3rd trimesters) stimulate the growth of the milk duct system in the breasts.

(i) Estrogen : Stimulates the milk duct system to grow and become a specifie. Its level drops at delivery. It remains low for the past several months.
(ii) Progesterone: influences the growth in size of alveoli and lobes. Its level drops after birth. This triggers the onset of copious milk production.
(iii) FSH and (iv) LH (v) Prolactin plays a role in the increased growth of the alveoli during pregnancy.
(vi) Oxytocin – contracts the smooth muscles of uterus during and after birth. After birth oxytocin contracts the smooth muscle layer of band like cells, surroundings the alveloli to squeegee the newly produced milk into the duck system Oxytocin is essential for the milk ejection reflex or let down to occur. Suckling evokes reflex Oxytocin release and milk ejection.

Posted by aalkhadiza
Answered On December 7, 2018 10:35 am